Building a chase for your FMI/Superior, Vantage Hearth, DESA or Vanguard woodburning fireplace? This venting kit contains all the necessary components for the 8DM class A chimney pipe. All you have to do is choose the necessary chimney height you need - measured from the top of the fireplace - and you will receive the corresponding pipe lengths, two firestops, a storm collar and a round chimney cap with mesh screen.